Pith Number

pith:YJW2OCMI

pith:2015:YJW2OCMIXT7HD7SLNCBVIBUBDK

not attested not anchored not stored refs pending

Eliminating the optical depth nuisance from the CMB with 21 cm cosmology

Aaron R. Parsons, Adrian Liu, Blake D. Sherwin, Jonathan R. Pritchard, Rupert Allison, Uro\v{s} Seljak

arxiv:1509.08463 v2 · 2015-09-28 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YJW2OCMIXT7HD7SLNCBVIBUBDK}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

The Lumina Project: CMB Optical Depth Fluctuations from Patchy Reionization

Receipt and verification

First computed	2026-05-18T01:20:16.751689Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c26da70988bcfe71fe4b68835406811a92a6afd2f713e40d48d74de79218b3c5

Aliases

arxiv: 1509.08463 · arxiv_version: 1509.08463v2 · doi: 10.48550/arxiv.1509.08463 · pith_short_12: YJW2OCMIXT7H · pith_short_16: YJW2OCMIXT7HD7SL · pith_short_8: YJW2OCMI

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/YJW2OCMIXT7HD7SLNCBVIBUBDK \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c26da70988bcfe71fe4b68835406811a92a6afd2f713e40d48d74de79218b3c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8eb2f167926580615e1a2ec4ef83cc8b939baa9ccb94662dc59193573802b2be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-09-28T20:09:38Z",
    "title_canon_sha256": "dd5bb60621b505cb4efeda6641b1076a2ef50b878e1143d283edb967e9873950"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.08463",
    "kind": "arxiv",
    "version": 2
  }
}